Cucurbituril homologues

Cucurbituril homologues having glycoluril units fewer or greater than six were recently reported by Kim and CO workers. The cyclization at lower temperatures (75-... 

Cucurbit [6] uril and increasingly its higher homologues have been used extensively in a variety of host-guest chemistry and nanostructure assemblies. Of particular appeal are rotaxanes and molecular necklaces, mechanically interlocked assemblies of molecules based on CB [6]. Efficient synthesis of ID, 2D and 3D polyrotaxanes and molecular necklaces (cucurbituril beads linked by a macrocyclic molecule string ) has been achieved by a combination of self-assembly and coordination chemistry. We discuss rotaxanes and molecular necklaces in Section 10.7, and cucurbil-based systems are summarised in a recent review.23... 

Although cucurbit[5]uril (CB[5J) became available only recently, along with other CB homologues. its derivative decamethylcucurbit[5]uril (Me-CB[5]) " was known since 1992, and its chemistry was studied (see Cucurbituril Derivatives). Because CB[5] and Me-CB[5] have essentially identical cavity structures, their chemistry is also expected to be the same. 

Calixarenes Synthesis and Historical Perspectives, p. 153 Cucurbituril, Its Homologues, and Derivatives, p. 390... 

Cucurbituril, Its Homologues, and Derivatives, p. 390 The Diphenylmethane Moiety, p. 452 Interpenetration, p. 735 Macrocycle Synthesis, p. 830 Rotaxanes and Pseudorotaxanes. p. 1194 Self-Assembly Definition and Kinetic and Thermodynamic Considerations, p. 1248 Self-Assembly Terminology, p. 1263 Strict Self-Assembly and Self-Assembly with Covalent Modifications, p. 1372 The Template Effect, p. 1493... 

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